Decide the C3/C4 cache shape: content keyed by its own SHA (write-once,
immutable snapshot store) plus a path key holding the latest content
(live pointer). Notes the current immutability violation to fix.
Capture the walk-with-me + qfd session: CONTEXT.md ubiquitous-language
glossary, DESIGN.md goal-driven cascade (Beauty / Pride & Peace /
public voice), and ADRs for Note identity (Path) and the two reference
modes (Live vs Snapshot).